Wire-winding tool.



No. s61,2ss.- *PUBMED JULao, 190.1.

Hl Il WIRE WINDING T001.. APPLICATION FILED HOV. 21,1903. BENEWED JUNE 1'2. 1907.

. FETCH.

HENRY .1. HJORTH, OF CAMBRIDGE, MASSACHUSETTS.

WIRE=WINDING TOOL'.

Speciieaton of Letters Patent.

Patented July 30, 1907.

Application filed November 21,1903, Serial No. 182,051. Renewed June 12, 1907. Serial No. 378,578.

To all whom it may concern:

Be it known that l, HENRY J. HJORTH, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Wire-Winding Tools, of which the following is a specification.

This invention relates to a tool or appliance for winding a helix of wire upon a mandrel or other core, the tool being particularly adapted to making helical wire springs.

The object of the invention is to save time and labor in this operation and to secure a more uniform and tightly-Wound product.

Other advantages incidental to the invention will appear from the succeeding description.

Of the accompanying drawings-Figure 1 represents a side elevation of a wire-winding tool embodying the invention and showing it in use for the purpose of making an open spring or helix. Fig. 2 represents a front elevation showing the manner of use in winding a closed helix. Fig. 3 represents a rear elevation of the rotary plate having coil-spacers and mandrel-rests. Fig. 4 represents a section of said plate on line 4-4 of Fig. 2. Fig. 5 represents a vertical section.

The same reference characters indicate the same parts in all the figures.

In the drawings, 10 is a handle forming the support for a stud 11 screw-threaded on its outer end and carrying axially and rotatably adjustable clamping-plates 12 13 which together constitute a frictional Wire-tension device to give the desired drag upon the wire, said plates being forced together by a nut 14 on the threaded s tud 11.

The plate 12 is provided with a circumferential series of webs 15 15 which are of different widths or thickness as shown and are adapted to act as spacers or separators Whose cheeks or sides engage the Wire between the successive coils or convolutions of an open helix, the edge 1G of each web constituting a rest which is recessed or substantially V- shaped or ,flaring-sided as shown to receive and abut against the mandrel 17 on which the helix is wound. A pin 18 on the head of the handle 10 is adapted to engage a series of holes 19 in the back of the plate 12 so as to secure said plate in different rotary positions according to the particular web 15 which is in use as a coil-spacer. l have shown one of the webs as provided with a pair of rollers 20 20 forming a recessed mandrel-rest which subserves the same function as the plain edges of the remaining webs but affords a decreased friction against the mandrel. These roller-rests may be either omitted or provided in greater number as desired.

Between the clamping plates 12 13 the stud 11 is formed With an aperture 21 constituting a Wire-guide and below the plates the handle 10 is provided with an tions.

ear 22 having an aperture 23 which constitutes an auxiliary Wire-guide.

The plate 13 is further shown as provided with a recessed mandrel-abutment 24 adapted to be located alongside any of the webs 15 and arranged to engage the mandrel 17 as shown in Fig. 1 to take the side thrust of said mandrel and also to steady and guide the tool with respect to the mandrel. This element 24 may, however, be omitted without materially affecting the operativeness of the tool. 1n the operation of the appliance, one end of the wire 25 is fixed to the mandrel 17 or otherwise anchored and its long end is passed through the apertures 21 and 23. lf an open-coil helix is to be wound, the plate 12 is fixed at a rotary adjustment which will bring uppermost the web l5 of the proper width to give the desired spacing between the convolutions of the helix, and the plates 12 13 are clamped upon the wire by means of the nut 14 so as to afford tlie requisite frictional drag upon the wire. The mandrel 17 is then rotated Aby suitable means such as a lathe-chuck While the tool is held againstv rotation in the hands of the operator, or the mandrel may be held `from rotating and the tool `revolved around it. The

tension-clamp 12 13 winds the wire tightly upon the mandrel and one of the webs l5 spaces the convolu- As the coil grows the tool'is moved outwardly along the mandrel. ln Windinga closed helix, that is, one in which the convolutions are in Contact with each other, the tool is moved away from the mandrel a distance equal to the thickness of the w'ire and one 'of the webs 15, preferably the widest one, abuts against the formed helix as represented in Fig. 2.

The tool is capable of application to various sizes of work since the recessed mandrel-rests accommodate themselves to mandi-els or coils of different diameters, and the friction-plates 12 13 are capable of engaging the wire in different angular positions assumed by its uncoiled portion in passing from the circumference of the mandrel to the guide-aperture 21.

It Will be understood that my invention is not limited to the details of construction herein shown, but is capable of embodiment in various forms without departing from the spirit of the invention.

I claim:-

l. A wire-winding tool comprising a mandrel-rest substantially V-shaped or flaring-sided to accommodate it to different diameters of mandrel or coil, a wire-guide back of the apex of said mandrel-rest, and a wire-tension device of adjustable friction capable of engaging the wire between the mandrel-rest and guide in different angular' positions assumed by said wire.

-2. A wirewvinding tool comprising a mandrel-rest, and an adjustable frictional wire-tension device having means for engaging and exerting friction on the wire in dillerent angular positions assumed by the latter with respect to said mandrel-rest.

A wire-winding tool comprising a mandrel-rest, a

wire-guide, and a wire-tension device between said mandrel-rest and guide comprising a pair of substantially-parallel flat-faced friction members relatively adjustable toward and from each other.

4. A wire-winding tool comprising a mandrel-rest, a wire-guide, and a wire-tension device having coperating friction surfaces located both back of and in advance of said guide.

5. A wire-winding hand tool comprising a handle, coilseparating means mounted on the handle, and a wire-tension device. v

G. A wire-winding'hand tool comprising a handle, coilseparating means mounted on the handle, wire-guiding means, and a wire-tension device.

7, A wire-winding tool comprising relatively-adjustable viriction-members forming a wire-tension clamp, and coilseparating means adjacent said clamp.

S. A wire-winding tool comprising relatively-adjustable friction-members forming a wire-tension clamp, and wireguiding means located between said members.

9. A wire-winding tool comprising coil-separating means provided with a rest recessed to receive the winding mandrel or the coil of Wire wound thereon.

10. A wire-winding tool comprising a series of coil-separators ot different Widths.

11. A wire-winding tool comprising a support, a Wireguidc thereon, and a series of coil-separators of diierent widths adjustable on said support into and out of operative position with respect to Said guide.

12. A wire-winding tool comprising a support, and a series of mandrel-rests adjustable thereon into and out of operative position,'and each flanked by a pair of cheeks, said pairs forming coil-separators of different widths.

13. A wire-winding tool comprising a coil-separating web, a recessed mandrel-rest on the edge thereof, and adjustable friction-members constituting a Wire-tension device back of said mandrel-rest.

14. A wire-winding tool comprising a support, and a member rotatable thereon and having a series ot' coil-separators of different widths.

15. A wire-winding tool comprising a member having a circumferential series ol' coil-separating webs of different widths, and a recessed mandrel-rest on the edge of each web.

1S. A wire-Winding tool comprising a. handle, a twopart Wire-tension clamp, a Wire-guide between the parts of the latter, and an auxiliary Wire-guide external to the clamp and handle.

19. A wire-Winding tool comprising a support or handle having a threaded stud, a clamping plate rotatable on said stud and having a'circumferential series of coil-separators, a complemental clamping plate axially-movable on the stud, and a nut on the stud for forcing said plates together.

20. A wire-Winding tool comprising a handle or support, a coil-separator and a mandrel-abutment alongside of said separator, both carried by the handle.

21. A Wire-winding tool comprising` a handle or support, a coil-separator, a mandrel-abutment alongside of Said Separator, and a wire-tension device, all mounted on and carried by the handle.

22. A Wire-winding tool comprising a pair of frictional wire-clamping plates, a coil-separator formed on one of said plates, and a mandrel-abutment formed on the other plate.

23. A wire-winding tool comprising a support or handle having a roller forming a mandrel-rest, and a frictionclamp back of said mandrel-rest in` position to engage the uncoiled portion of the wire.

A wire-winding tool comprising a support or handle havinga pair of rollers forming a recessed mandrel-rest, and a wire-tension device.

1n testimony whereof I have affixed my signature, in presence of two witnesses. f

HENRY J. HJORTH. Witnesses:

R. M. PIERSON, A. C. Rli'iIGAN. 

